package com.itheima.security.distributed.uaa.config;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpMethod;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.oauth2.config.annotation.configurers.ClientDetailsServiceConfigurer;
import org.springframework.security.oauth2.config.annotation.web.configuration.AuthorizationServerConfigurerAdapter;
import org.springframework.security.oauth2.config.annotation.web.configuration.EnableAuthorizationServer;
import org.springframework.security.oauth2.config.annotation.web.configurers.AuthorizationServerEndpointsConfigurer;
import org.springframework.security.oauth2.config.annotation.web.configurers.AuthorizationServerSecurityConfigurer;
import org.springframework.security.oauth2.provider.ClientDetailsService;
import org.springframework.security.oauth2.provider.client.JdbcClientDetailsService;
import org.springframework.security.oauth2.provider.code.AuthorizationCodeServices;
import org.springframework.security.oauth2.provider.code.InMemoryAuthorizationCodeServices;
import org.springframework.security.oauth2.provider.code.JdbcAuthorizationCodeServices;
import org.springframework.security.oauth2.provider.token.AuthorizationServerTokenServices;
import org.springframework.security.oauth2.provider.token.DefaultTokenServices;
import org.springframework.security.oauth2.provider.token.TokenEnhancerChain;
import org.springframework.security.oauth2.provider.token.TokenStore;
import org.springframework.security.oauth2.provider.token.store.JwtAccessTokenConverter;

import javax.sql.DataSource;
import java.util.Arrays;

/**
 * Created by ZhangJie on 2020/9/12.
 */
@Configuration
@EnableAuthorizationServer
public class AuthorizationServer extends AuthorizationServerConfigurerAdapter {

    @Autowired
    private TokenStore tokenStore;

    @Autowired
    private AuthenticationManager authenticationManager; //在 WebSecurityConfig 中配置

    @Autowired
    private JwtAccessTokenConverter accessTokenConverter;

    @Autowired
    private ClientDetailsService clientDetailsService;

    @Autowired
    private AuthorizationCodeServices authorizationCodeServices;

    @Bean
    public PasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }

    //将客户端信息存储到数据库
    @Bean
    public ClientDetailsService clientDetailsService(DataSource dataSource) {
        ClientDetailsService clientDetailsService = new JdbcClientDetailsService(dataSource);
        ((JdbcClientDetailsService) clientDetailsService).setPasswordEncoder(passwordEncoder());
        return clientDetailsService;
    }

    @Override
    public void configure(AuthorizationServerSecurityConfigurer security) throws Exception {
        security
                .tokenKeyAccess("permitAll()")                    //oauth/token_key是公开
                .checkTokenAccess("permitAll()")                  //oauth/check_token公开
                .allowFormAuthenticationForClients()				//表单认证（申请令牌）
        ;
    }

    //客户端详情服务
    @Override
    public void configure(ClientDetailsServiceConfigurer clients) throws Exception {
        clients.withClientDetails(clientDetailsService);
        /*clients.inMemory()// 使用in‐memory存储
                .withClient("c1")// client_id
                .secret(new BCryptPasswordEncoder().encode("secret"))
                .resourceIds("res1") //资源列表
                .authorizedGrantTypes("authorization_code",
                        "password","client_credentials","implicit","refresh_token")// 该client允许的授权类型 authorization_code,password,refresh_token,implicit,client_credentials
                .scopes("all")// 允许的授权范围
                .autoApprove(true) //false: 跳转到授权页面让用户授权，ture，直接发令牌
                //加上验证回调地址
                .redirectUris("http://www.baidu.com");*/
    }

    //管理令牌
    @Bean
    public AuthorizationServerTokenServices tokenService() {
        DefaultTokenServices service=new DefaultTokenServices();
        service.setClientDetailsService(clientDetailsService);  //客户端信息服务
        service.setSupportRefreshToken(true); //是否产生刷新令牌
        service.setTokenStore(tokenStore); //临牌存储策略

        //令牌增强
        TokenEnhancerChain tokenEnhancerChain = new TokenEnhancerChain();
        tokenEnhancerChain.setTokenEnhancers(Arrays.asList(accessTokenConverter));
        service.setTokenEnhancer(tokenEnhancerChain);

        service.setAccessTokenValiditySeconds(7200); // 令牌默认有效期2小时
        service.setRefreshTokenValiditySeconds(259200); // 刷新令牌默认有效期3天
        return service;
    }

    //设置授权码模式的授权码如何存取
    @Bean
    public AuthorizationCodeServices authorizationCodeServices(DataSource dataSource) {
        return new JdbcAuthorizationCodeServices(dataSource);//设置授权码模式的授权码如何存取
        //return new InMemoryAuthorizationCodeServices();
    }

    @Override
    public void configure(AuthorizationServerEndpointsConfigurer endpoints) throws Exception {
        endpoints
                .authenticationManager(authenticationManager) //授权模式为密码模式需要配置
                .authorizationCodeServices(authorizationCodeServices) //授权模式为授权码模式需要配置
                .tokenServices(tokenService()) //令牌管理服务
                .allowedTokenEndpointRequestMethods(HttpMethod.POST); //允许post请求端点
    }
}
